You're right. They are 8-shot. I'm getting a lab pup later this week. I fire they caps while the dog eats. Worked real well 9 years ago with my last pup. She's not afraid of gun shots or fireworks or any other loud noise.
So looking online. I'm guessing there's a hazmat fee to ship.
Yes. Smashing the old paper roll caps with a big rock was always fun.